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27 April, 20:28

How many species have internal skeletons?

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  1. 27 April, 20:36
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    The human skeleton is the internal framework of the body. It is composed of around 270 bones at birth - this total decreases to around 206 bones by adulthood after some bones get fused together
  2. 27 April, 20:41
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    6.2 skeletons, there are 3 different types there is hydrostatic, endoskeletons and exoskeletons
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